Ti_(2)CMXene的宽带饱和吸收  

Broadband saturable absorption of Ti_(2) CMXene

作　　者：左世一 刘佳 高亚臣[1] ZUO Shi-Yi;LIU Jia;GAO Ya-Chen(College of Electronic Engineering,Heilongjiang University,Harbin 150080,China)

机构地区：[1]黑龙江大学电子工程学院,哈尔滨150080

出　　处：《黑龙江大学工程学报》2022年第3期57-61,共5页Journal of Engineering of Heilongjiang University

基　　金：国家自然科学基金面上项目(61275117)。

摘　　要：利用Z-扫描技术研究了Ti_(2)C的非线性吸收。实验结果表明,在不同强度的500 nm激光下,Ti_(2)C总是显示出饱和吸收(SA),并且饱和吸收随着激光强度的增加而增加。此外,还研究了激光波长对Ti_(2)C的非线性吸收的影响。研究发现,Ti_(2)C在不同波长(450、475、500、532、550、600 nm)的激光作用下均为饱和吸收,并且在532 nm处,饱和吸收最强。利用基态等离子体漂白分析讨论了饱和吸收的机制。研究表明Ti_(2)C纳米片表现出宽带饱和吸收,可以用于激光器锁模。Z-scan technology was used to study the nonlinear absorption of Ti_(2)C.The experiment results demonstrate that,Ti_(2)C always shows saturable absorption(SA)at 500 nm and the amplitude of the SA becomes more pronounced as the energy increases.Moreover,the effect of laser wavelength on the nonlinear absorption Ti_(2)C was also investigated.It was found that Ti_(2)C showed SA at different wavelengths(450,475,500,532,550,600 nm),and at 532 nm the SA is the strongest.The SA was analyzed in terms of the bleaching of ground state plasmon.These investigations implies that Ti_(2)C nanosheets exhibit broadband SA which can be applied in mode-locking.

关 键 词：非线性吸收 Z-扫描 二维材料 二维过渡金属碳化物 

分 类 号：TB383[一般工业技术—材料科学与工程]